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Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
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- MERKBLATT AD 2000 W2/W7/W10
ASTM A320/A320M Grade B8LN Class 1 Nitrogen-Enhanced Stainless Steel Bolting
Class 1 Low Temperature Fasteners - AISI 304N Austenitic Grade
ASTM A320/A320M Grade B8LN Class 1 is specifically developed for applications requiring higher strength than standard 304 while retaining superior low temperature impact properties and resistance to sensitization in welded constructions.
ASTM A320/A320M Grade B8LN Class 1 Stud Bolts Properties
ASTM A320/A320M Grade B8LN Class 1 Stud Bolts Chemical Requirements
Austenitic Steels
| Grade Symbol | UNS Designation | C, max | Mn, max | P, max | S, max | Si, max | Ni | Cr | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A320 B8LN Class 1 | S30453 | Range,% | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 8.0-11 | 18.0-20.0 | 0.10-0.16 |
| Product Variation, % Over or Under | 0.005 over | 0.04 over | 0.010 over | 0.005 over | 0.05 over | 0.15 | 0.20 | 0.01 | ||
ASTM A320/A320M Grade B8LN Class 1 Stud Bolts Mechanical Requirements
Austenitic Steels
| Grade and Class | Diameter, in. [mm] | Heat Treatment | Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa] (0.2 % offset) | Elongation in 2 in. or 50 mm, min, % | Reduction of Area, min, % | Hardness, max |
|---|---|---|---|---|---|---|---|
| ASTM A320 B8LN : Class 1 | All diameters | carbide solution treated | 75 [515] | 30 [205] | 30 | 50 | 223 HBWDor 96 HRB |
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